RU171967U1 - OFFLINE HYDROPHYSICAL FIELD RECORDER - Google Patents

Abstract

The utility model relates to oceanology, namely to information-measuring equipment, and can be used for hydrophysical studies in the seas and oceans. The recorder is a waterproof housing, including a power supply, a clock generator connected by a serial synchronous interface to a microcontroller control unit and a non-volatile solid-state SD memory unit. The control unit is connected to the registration channels of the hydroacoustic field, registration of the hydrostatic pressure field, registration of the temperature field and the positioning module. All electronic components and the accelerometer are located on a single board, and hydrostatic and hydroacoustic pressure and temperature sensors are installed on the outside of the recorder housing in close proximity to each other. The technical result is an increase in the reliability of the measured parameters of hydrophysical fields, the expansion of functionality. 1 ill.

Description

The utility model relates to oceanology, namely to information-measuring equipment, and can be used for hydrophysical studies in the seas and oceans.

One of the modern and promising methods for studying hydrophysical fields in the ocean (hydroacoustic field, temperature field, and hydrostatic pressure field) is the use of recorders installed on the bottom for measuring autonomous devices. As a rule, one or several recorders are used with built-in or remote sensors of hydrophysical fields.

Since all hydrophysical fields are connected and have a significant mutual influence, in order to obtain reliable measurement results, it is also necessary to take into account their interaction, which means that it is advisable to measure these fields using sensors located at a minimum distance from each other. At the same time, it is required to track the spatial displacements of the parameter measurement point (registrar), which, as a rule, due to various hydrodynamic processes (flows, internal waves) in the aquatic environment, can change the location of the recording device. This problem is especially relevant when using distributed antennas, as well as using drifting and spaced apart registrars.

Known marine autonomous bottom station that solves the technical tasks of the registrar, made in the form of a deep-sea self-floating carrier of geophysical equipment installed on the bottom of the water area (clause of the Russian Federation No. 2572046 C1, publ. 12/27/2015). The station includes a registration unit, a synchronization unit, a unit for hydroacoustic channel, a power unit, an orientation determination unit, made in the form of tilt and azimuth sensors and an information storage device, located in an airtight container. However, its use only in the version of setting to the bottom and the absence of channels for recording the temperature field and the hydrostatic pressure field narrows the range of problems solved by the station.

A self-contained hydroacoustic observation station is known, the hydroacoustic antenna module of which contains several structurally integrated hydroacoustic recorders with pre-amplifiers built into them, a common time system and an orientation determination system common to all hydroacoustic recorders, the outputs of which are connected to the inputs of the hydroacoustic recorder processors. Each hydroacoustic recorder is made in the form of a series-connected hydroacoustic pressure receiver, an amplifier with a filter, an analog-to-digital converter, a processor and a digital information storage device, and a power source (Section RF No. 24890 U1, publ. August 27, 2002). However, the absence of an external temperature sensor and a tracking system for changing the orientation of the antenna module does not allow monitoring the hydrological state of the external environment, and the use of a low-bit analog-to-digital converter of acoustic signals reduces the noise immunity of the system.

There are known vertical antenna systems for studying hydroacoustic fields, for example, a vertical acoustic-hydrophysical antenna equipped with measuring modules arranged in series on a flexible carrier, each of which includes a sound pressure sensor (hydrophone), in the immediate vicinity of which there is a thermal sensor (Vertical acoustic-hydrophysical antenna "Mollusk-97" "// Instruments and experimental technique. 1998, No. 5, P. 141-144). However, the system does not allow measuring hydrostatic pressure and tracking and changing the position of the measuring module in space.

Closest to the claimed is the measuring unit of the acoustic-hydrophysical antenna, which includes located in close proximity to each other, a sound pressure sensor, a temperature sensor and a hydrostatic pressure sensor. Through the cable, the measuring unit is connected to the power supply and registration (p. RF No. 73964 U1).

However, this measuring unit does not allow to obtain accurate data on the parameters of hydrophysical fields, since the measuring blocks do not have a sensor for measuring the position in space, which significantly affects the reliability of the measurement of hydrophysical fields. In addition, the measuring unit is only part of an autonomous system in which the power supply, recording and recording units are moved outside it and connected to the measuring unit via a flexible cable, and the system as a whole does not have the ability to support synchronization with other similar devices, which generally limits scope of its use.

The technical problem is the development of an autonomous hydrophysical field recorder with advanced functionality and ease of use.

The technical result consists in increasing the reliability of the measured parameters of hydrophysical fields, expanding the functionality.

The problem is solved by an autonomous hydrophysical field recorder, including a waterproofing housing, in which a power supply unit, a thermostatic quartz clock generator are installed, connected by a serial synchronous interface to a microcontroller control unit and a non-volatile solid-state SD memory, as well as a hydroacoustic field registration channel connected to the control unit hydrophone, scaling amplifier and analog-to-digital converter, channel registration channel guide the static pressure in the strain gauge hydrostatic pressure sensor, matching amplifier and analog-to-digital converter, the channel for recording the temperature field in the digital temperature sensor and the channel for recording the parameters of the change in position in space as part of a three-component accelerometer, while all electronic components and the accelerometer are located on a single board and hydrostatic, hydroacoustic pressure and temperature sensors are installed on the outside of the housing directly close proximity to each other.

The proposed solution is due to the additional equipment of the recorder with a high-precision clock generator and positioning module, as well as the installation of all electronic components and the accelerometer on a single board and the installation of all structural elements inside a single waterproofing case, on whose outer surface there is a hydrophone, hydrostatic sensor pressure and temperature sensor, improves the reliability of the obtained characteristics of hydrophysical fields and dnovremenno allows connecting several registers where necessary the making of these antenna systems, increasing functional capabilities registrar.

The drawing shows a block diagram of the inventive registrar, containing a microcontroller control unit, a thermostatic clock generator, a channel for recording hydroacoustic pressure, including a hydrophone, a scaling amplifier and an analog-to-digital converter, a channel for registering a hydrostatic pressure field - a hydrostatic pressure strain gauge, matching amplifier and analog- digital converter, temperature field registration channel - digital temperature sensor, parameter recording channel changed Position in space - positioning module.

The device operates as follows. When you turn on the power (not shown), the microcontroller control unit (for example, PIC32MM0064GPL036 (MicroChip) switches the inputs 1-4 (Input 1, Input 2, Input 3, Input 4) of the receiving path and goes into standby mode of the external clock signal to start recording measurements supplied to input C (Vh. C). The clock frequency for the microcontroller control unit and the “32-bit ADC” (for example, ADS 1264 with a sampling frequency of 10 kHz (Texas Instruments) is supplied from a highly stable thermostated clock (for example, MXO37 / 8P ( Magic Crystal.) With the input "C" can also carry I synchronously start and operate the recorders, if they are part of a discrete distributed antenna. When an external signal is received at input “C” of the microcontroller control unit, the process of converting the signals arriving at inputs 1–4 starts. At digital input 1 (Input 1), The SPI protocol receives a past scaling amplifier with a low-pass filter and a 32-bit ADC digitized signal from a hydrophone (for example, a piezoceramic - EPBA 3 receiving-amplifying module). Signal from the hydrostatic pressure sensor (for example, a strain gauge pressure sensor D-1 (Microtensor), passed through a matching amplifier and digitized using a 16-bit ADC (for example, AD7792) with a sampling frequency of 10, is input to input 2 (Input 2) by the SPI protocol Hz. To the digital input 3 (Input. 3) via the I ² C protocol a signal is received from the positioning module (digital three-component accelerometer, for example, GY 298 (Arduino) with a sampling frequency of 10 Hz). To the digital input 4 (Input. 4) via 1wire protocol receives a signal from an external digital temperature sensor s (e.g., DS18B20 (DallasSemiconductor with a sampling frequency 1 Hz). These are heated at a buffer memory control unit MCU, and then blocks are recorded on non-volatile type memory card SD.

The device is implemented using well-known components and the measurement results in the form of a structured data block are stored on a non-volatile SD memory card with the required capacity, for example, 128 GB, which allows for continuous recording for up to three months.

The inventive registrar can be used both in a single setting and as part of a distributed receiving antenna due to the presence of a high-precision clock generator that provides long-term synchronization of all the recorders that make up the discrete distributed receiving antenna.

Claims (1)

An autonomous hydrophysical field recorder, including a waterproofing enclosure, in which a power supply unit, a thermostatic quartz clock generator are located, connected by a serial synchronous interface to a microcontroller control unit and a non-volatile solid-state SD memory, as well as channels for recording a hydroacoustic field in the hydrophone in parallel with the control unit scaling amplifier and analog-to-digital converter, hydrostatic field registration pressure in the composition of the hydrostatic pressure strain gauge, matching amplifier and analog-to-digital converter, registration of the temperature field in the digital temperature sensor and the channel for recording the parameters of the change in position in space as part of a three-component accelerometer, while all electronic components and the accelerometer are located on a single board, and hydrostatic and hydroacoustic pressure and temperature sensors are installed on the outside of the housing in the immediate vicinity of the other from each other.

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